Refactor KeyManager and TagRecogniser. #55

briar-api/src/org/briarproject/api/transport/IncomingKeys.java

@@ -0,0 +1,51 @@
+package org.briarproject.api.transport;
+
+import org.briarproject.api.crypto.SecretKey;
+
+import static org.briarproject.api.transport.TransportConstants.REORDERING_WINDOW_SIZE;
+
+/**
+ * Contains transport keys for receiving streams from a given contact over a
+ * given transport in a given rotation period.
+ */
+public class IncomingKeys {
+
+	private final SecretKey tagKey, headerKey;
+	private final long rotationPeriod, windowBase;
+	private final byte[] windowBitmap;
+
+	public IncomingKeys(SecretKey tagKey, SecretKey headerKey,
+			long rotationPeriod) {
+		this(tagKey, headerKey, rotationPeriod, 0,
+				new byte[REORDERING_WINDOW_SIZE / 8]);
+	}
+
+	public IncomingKeys(SecretKey tagKey, SecretKey headerKey,
+			long rotationPeriod, long windowBase, byte[] windowBitmap) {
+		this.tagKey = tagKey;
+		this.headerKey = headerKey;
+		this.rotationPeriod = rotationPeriod;
+		this.windowBase = windowBase;
+		this.windowBitmap = windowBitmap;
+	}
+
+	public SecretKey getTagKey() {
+		return tagKey;
+	}
+
+	public SecretKey getHeaderKey() {
+		return headerKey;
+	}
+
+	public long getRotationPeriod() {
+		return rotationPeriod;
+	}
+
+	public long getWindowBase() {
+		return windowBase;
+	}
+
+	public byte[] getWindowBitmap() {
+		return windowBitmap;
+	}
+}